Mold back



ug. 12, 1947. H, P, FlNLEY 4' 2,425,610

MOLD RACK Filed Jan. 16l 1945 2 Sheets-Sheet l Aug. l2, 1947. H. P.FlNLEY 2,425,610

a I HvsHRNLEy Patented Aug. 12, 1947 UNITE-.o STATES PATENT oFFlcEz2,425,610v i MOLD RACK Hugh P. Finley, Berlin, Ni. J., assgnor to Owens-Illinos Glass Company, a corporation of Ohio Application January 16,1945, Serial No. 573,057

(Cl. 18k-5) Claims.

My invention relates t'omolds or forms in which material is molded andyhardened,l and racks for supporting the forms during the induration ofthe material. In its preferredv form the invention provides molds with'open ends in combination witha supporting rack' for the molds, the rackhaving' end closing4 plates to form the end walls forth'e molds.

An" obj ect of the invention is to provide a molding apparatusvcomprisingV an open-ended mold' or form havingthe` advantages ofysimplicityof construction', low cost, ease, of handling,.elimination ofthe end walls of themold', permitting the sides which have the requiredresiliency to be sprung apart and thereby facilitate stripping the formfrom the hardened;I material, and further, by omitting the ends,avoiding the need of any welding operations in making the form or theuse of otherV structural means for uniting the sidesl and ends of theform. y i

A further object of the invention is-to provide a rack adapted forholding a multiplicity of the open-ended forms and comprising platesarranged to provide end wallsfor thevforms, means being provided bywhich said platesmay be easily and quickly adjusted to the forms.

Other objects of the invention will appear' hereinafter.

Referring to the accompanying drawings which illustrate apreferred.formcf` theinvention:

FigV 1 isanY end elevation with parts broken away, of'azrack. loadedwith forms.

Fig. 2 is a fragmentary cross-sectional elevation on a larger scale of alower portion of the rack with a form loaded thereon.

Fig. 3 is a plan view of the rack.

Fig. 4 is a side elevation of the rack, partly loaded.

The rack which may be made of steel or other suitable metal comprises abase 5 and a pair of parallel, vertical end plates 6 and 1 adapted toprovide end walls for the molds or forms as hereinafter set forth.Vertical angle bars G welded or otherwise rigidly secured at their lowerends to the base 5 at one end thereof, provide supports for the plate 6which is fixed thereto. Vertical angle bars I0 at the opposite end ofthe base 5 and rigidly attached thereto as by welding or the like,provide a support for the plate 'I which has a floating connectiontherewith and is adjustable toward and from the plate 6. The frameworkincludes crossbars Iiia welded to the upper ends of the uprights 8 andI0.

Bolts I I welded to the floating plate 'I adjacent the corners thereof,extend loosely through openings' I`2r (Fig. 2) inthe angle bars IIl andare provided with nuts I3 which adjustably limit inward movement of the`plate 'l V I i are threaded through nuts I5 welded' to. the angle barsI0 and serve for tightening andholding the end plate T against theioldsI y6.

The moms or forms ls' which'may be madeor as slide rails on whichthejf'orm's" I are` slid into' 1 positionand supported in therack. n

The-molds or forms Ifare' adapted to be'lled withA slurry or othermoldablematerialwhile in a soft or'semi-liquid condition, thematerial'be-l ingthereafter hardenedwhile in the molds.' As'indicated'in Fig; l; the-formsH I'are arranged'inv tiers with-a numberof forms in each tier. n

In operation the lowermost row of forms II is '.placed'- in positionon-1thesupp0rti`ng strips I9.`

The' floatingH end? plate 'lm'ayv then' be adjusted:i The" close to'butnot pressing againstV the molds. molding' material 20' is' thenpoured into the' molds.' The remaining" tiers of molds are then slidintoposition in succession on" the-slide rails The floating'-v plate 'lmaythen'be'tightened'against the moldsV bythe bolts I4. The rack isprovided with wheels'- 2I- running on tracks 225 on which the rack is I9and are filled in` like manner.

rolled into a conditioning chamber or tunnel 23 Where the material isheat-treated as by means of steam and the molding material therebyhardened. The rack is then Withdrawn from the tunnel, the tighteningbolts I4 retracted to free the floating plate 1, permitting the forms I6to be removed. The slabs of molded material may then be readily removedfrom the forms, the resiliency of the side walls I8 facilitating suchremoval. Cover plates or shields 25 (Fig. 2) placed over the moldsprotect the material while being treated in the conditioning chamber 23.The shields are particularly adapted to prevent steam condensation fromdripping into the molds.

Modifications may be resorted to within the spirit and scope of myinvention.

I claim:

1. The combination of a rack comprising parallel-spaced vertical plates,horizontal slide strips attached to the inner faces of said plates withthe strips on each plate paired with those on the other plate andvertically spaced for supporting mold forms in tiers, and open-endedmold frightening bolts" forms supported on said strips and free for horiv zontal sliding movement thereon in a direction parallel with the faceplates, said plates being positioned to form closures for the open endsof the mold forms, one of said plates being iloatingly mounted andadjustable toward and from the molds while the latter are supported onsaid strips.

2. The combination of a rack comprising parallel-spaced Vertical plates,horizontal slide strips attached to theV inner faces'of said vplateswith` the strips on each plate paired with those on theY y other plateand vertically spaced for supporting` mold forms in tiers, andopen-ended mold forms ,slidably supported on said strips, said platesbeing positioned to form closures for the openA ends of -the mold forms,said rack comprising vertical supporting bars spaced outwardly from oneof said plates, means providing a floating connectionY y of the latterwith said bars, said means including bolts attached to the floatingplate and extendingv loosely through openings formed in the saidvsupporting bars, and tightening bolts having a screwthreaded connectionwith said supportingbars Vand positioned to bear against the exteriorface of the said floating plate for clamping the latter against saidmold forms.V

3. Molding apparatus comprising a rack andv open-ended forms removablysupported therein, said forms each consisting of an imperforate bottomand imperforate sidewalls rising therefrom, said rack comprisingvertical parallel end plates in position to form closures for the openends of Ythe forms when the latter are placed on the c rack, meansconnected to said end platesfandy cooperating therewith to form aslideway on whichV the forms are slidable into and out of the rack, andmeans for adjusting one of said end plates toward and from the other toa position in which the end plates grip the forms andV close said endsthereof while on the slideway and to another position in which the endplates are close to the ends of the formsand provide closures thereforwhile theV forms are free for said s'lidable movement, and means forsecuring said adjustable plate in said positions of adjustment.

4.Y The combination of aV rack comprising `par- Y allel spaced verticalplates, a baseto which' the plates are attached, horizontal slide stripsat` tached to the inner faces of said plates with the strips on eachplate paired with those on the mold forms in tiers, open-ended moldforms each consisting of an imperforate bottom and imperforate sidewalls rising therefrom, said mold forms being supported on said stripsand free for horizontal sliding movement thereon inV a directionparallel withV the said plates, said plates being positioned to formclosures for the open ends of the mold forms with the latter in slidingcontact.

with plates, means for adjusting one Vsaid plate toward the other to oneposition in which it bears against the mold forms and clamps thembeutween the said plates, and to another position.

in which lthe mold forms are free for sliding- Y movement between theplates and in which latter K position, said plates substantially closethe open Y endsof the mold forms, and means for securing Number Name y`Date Y 2,180,304 Minor Y Nov."14,-1939 Y1,184,117 Morley et al.V May23; 1916 1,440,105 Roiderer Dec.r26, Y1922` 1,481,948 Zagelmeyer,Jan.`,29,11924 1,348,775 Bellonby Aug. 3; 1920 l,

V281,057 YHale Y July 10, 1883 1,228,240 Pierce May 29,1917 414,458Strickler et a1.' 1 Nov. 5,1889 1,256,241

other plate and vertically spaced for supporting Y said adjustable platein said positions'of adjustment. 5.- Molding apparatus comprising a rackYand open-ended mold forms, said rack comprising a horizontal base, apair of parallel spaced vertical plates mounted over the base, means'rigidly attaching one said plate to the'base; means forV adjusting theother plate bodily toward and from` Vthe first plate to differentpositions of adjust,-

ment, means for locking the adjustable plateinV any said position ofadjustment, and oppositely disposed parallel slide strips attached tothe'inner' faces of said plates, said mold forms being 'slid-i ablysupported on said strips for horizontal move- Vment thereon, saidplates, while the movable plate is locked in one said position, beingclose to and forming closures for said ends while the mold'forms slideonsaid strips.

Y 'HUGH PQFINLEY? Y y REFERENCES CITED Then'following references areofrrec'ord `in`=thef le of this patent:

' UNITED sTATEs PATENTS McGinnis Eet.` 12, 19h18

